How would you add a new column ‘year’ to jobs data frame? The column should contain...
How would you add a new column ‘year’ to jobs data frame? The column should contain the corresponding year for each post_date. For example: for post_date value 2017-08-16 ‘year’ value should be 2017.
Homework Answers
i begin by transforming the column post_date into date format. after doing this, you could use a simple function to extract the year.
jobs["post_date"] =pd.to_datetime(jobs["post_date"])
should be enough to change it into a datetime type. if it doesnt
you should use datetime strpstring in order to tell python what is
the specific format of the "post_date" column,
so it to read it as a date. After that do the following:
jobs["year"] =jobs["post_date"].dt.year
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map the changes and determine the score
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different species. It is therefore a very variable column in the
character matrix. Determine the most parsimonious number of changes
for the circumstance where the ancestor is each of the 4
nucleotides. In other words, first assume the ancestor is "A". How
many changes would need to happen in the tree to produce...
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map the changes and determine the score
Column 49. This question should be done by HAND.
a. This column has evolved to contain all 4 nucleotides in
different species. It is therefore a very variable column in the
character matrix. Determine the most parsimonious number of changes
for the circumstance where the ancestor is each of the 4
nucleotides. In other words, first assume the ancestor is "A". How
many changes would need to happen in the tree to produce...
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